1983 Aspencade. Bought it 4 yrs ago. Collected necessary parts. Started fixing it up 1st of June/18. Did just about everything to this thing maintenance-wise. Fired it up. Tach reads zero. I tried to find this subject in the forums, no luck. All "tach problems" are cable/analog. Manual is useless in this case. Not covered in manual.

Could use info. By the way.....THANK YOU to everyone on these forums. Everything I did to this bike to restore it, I got the info from THIS SITE. Everyone's experiences and information proved to be PRICELESS. I am NOT a mechanic, but was able to do everything myself (mostly because of budget). Tires, brakes, calipers, wheel bearings, timing belts, lights, LED's, front/rear master cyl. rebuilds, patching ABS on bags.

It appears there are signals from both coils going to the instrument panel, a yellow/blue & a yellow/green wire.(I have such a hard time following those lines on those spaghetti wiring diagrams I could be wrong) You might check those for continuity to the yellow and blue wires at the coils. Other than that it's probably something inside the instrument panel.

DaveO has it right. There are two wires, Yellow/Blue and Yellow/Green going into the meter that are connected to the coil primaries. They supply pulses to the meter, which are counted/timed by the meter to generate the RPM. Check that you are seeing pulses there, and have connectivity from each wire to one of the coil primaries. If you have pulses there when the engine is running, the problem is likely going to be in the tach meter itself.

Thank you Robert78.5. It was EXACTLY that. The wire connection was old and crusted. It was literally disconnected inside the insulator, which is why I couldn't spot it.
Cleaned up contacts, put on new connector. I'm sure it will work. THANK YOU for your response and your knowledge. You too WingAdmin..!!

Said it before, but it's worth saying again........THANK YOU to all on these forums. Except for the carbs, I was able to do the whole restoration with just using the information and articles on this website. All of your knowledge, experience, and ups-n-downs made it possible to realize my goal......GIT-R-DONE..!!!

Just took the bike out for a quick shakedown. She runs PERFECTLY. I put a digital LED volt meter on, just to see if the OEM was reading correctly. YEP.....she was.
I think the reason it is charging so well.......currently at 14.7 v, is partially due to the fact I took off 19 LIGHTS, and replaced them with LED's.

I'll be taking her for about a 200 mi. trip this week to make sure "all the bugs" have been worked out.

very cool !
if the weather ever dries out again i should have my very first goldwing ready for a test drive with just a couple of days work. can't wait !
love this website, too. so much info readily available that one rarely needs to actually ask a question, and when you do, the answer usually comes quick and clear.